Temperature for September
In Miami, FL during September the average high temperature is 89.2°F. The hottest day on record was September 17, 1981 when the temperature hit 97.9°F.
Precipitation for September
In September the average monthly rainfall in Miami, FL is 9.03 inches with rain usually falling on between 17 and 18 days. 1988 was the driest September with only 3.29 inches of rain falling, and 2001 was the wettest September with 19.04 inches of rain. The wettest single day in September was 29 September 2001 when 4.74 inches of rain fell.
There are thunderstorms on between 10 and 11 days in September.